hi, i don't have an answer for you, but i have a link to a message board where you could get a answer.
scroll down and you'll see the link for the message board on the left. lots of useful info at the site too. check it out!
di (sorry for the lower case, i'm typing one handed)

I have never printed on vellum but I have a friend who does. She said that if you are using an ink jet printer that there is vellum you can buy that is made specifically for ink jet printing so the ink will not smear. She said you can but it at Michael's the brand is Strathmore. below is also a link that carries it. She also said the only way for it not to smear is to use a laser jet printer. Hope this helps.